| Message ID | 62004f1fa97ab48ca53f08addea531a25886f5f7.1621577151.git.naveen.n.rao@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | RFC |
| Headers | show |
| Series | powerpc: Stack tracer fixes | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (258eb1f3aaa9face35e613c229c1337263491ea0) |
| snowpatch_ozlabs/build-ppc64le | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64be | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64e | success | Build succeeded |
| snowpatch_ozlabs/build-pmac32 | success | Build succeeded |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 10 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
diff --git a/arch/powerpc/kernel/stacktrace.c b/arch/powerpc/kernel/stacktrace.c index 1e1be297c5d6c7..f884c5d21fa7e7 100644 --- a/arch/powerpc/kernel/stacktrace.c +++ b/arch/powerpc/kernel/stacktrace.c @@ -51,6 +51,10 @@ void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie, if (!consume_entry(cookie, ip)) return; + ip = ftrace_get_traced_func_if_no_stackframe(ip, stack); + if (ip && !consume_entry(cookie, ip)) + return; + sp = newsp; } }
With -mprofile-kernel and ppc32, the function tracer is invoked before a function sets up its own stackframe. This results in the traced function not appearing in stack traces. Fix this by checking for ftrace entry and including the traced function in the stack trace. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> --- arch/powerpc/kernel/stacktrace.c | 4 ++++ 1 file changed, 4 insertions(+)